605257 has 2 divisors, whose sum is σ = 605258. Its totient is φ = 605256.

The previous prime is 605249. The next prime is 605261. The reversal of 605257 is 752506.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 594441 + 10816 = 771^2 + 104^2 .

It is a cyclic number.

It is not a de Polignac number, because 605257 - 2³ = 605249 is a prime.

605257 is a lucky number.

It is a plaindrome in base 9.

It is not a weakly prime, because it can be changed into another prime (605237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302628 + 302629.

It is an arithmetic number, because the mean of its divisors is an integer number (302629).

2⁶⁰⁵²⁵⁷ is an apocalyptic number.

It is an amenable number.

605257 is a deficient number, since it is larger than the sum of its proper divisors (1).

605257 is an equidigital number, since it uses as much as digits as its factorization.

605257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 605257 is about 777.9826476214. The cubic root of 605257 is about 84.5888797892.

The spelling of 605257 in words is "six hundred five thousand, two hundred fifty-seven".